Multiple spray gun



Jan. 4, 1949. H. STRIEGEL ETAL MULTIPLE SPRAY GUN 5 Sheets-Sheet 2 FiledMay 7, 1945 i Q 2? if. a 3/ a 225 #52 2.? f 7. $5M Z/ w 3 g a WW 9 /5 7Jan.

I1; f 1 T Z5 I 45 J15 H. L. STRIEGEL ETAL MULTIPLE SPRAY GUN 5Sheets-Sheet 3 Jan. 4, 1949. H. L. STRIEGEL EI'AL 2,458,220

MULTIPLE SPRAY GUN Filed May 7, 1945 5 Sheets-Sheet 4 a; //z i 14 //7fiz Je I: 2 0215 40 Klara la! 451774 91 1949- H. L. STRIEGEL ET AL2,453,220

MULTIPLE SPRAY GUN Filed May 7, 1945 5 Sheets-Sheet 5 Patented Jan. 4,1949 MULTIPLE SPRAY GUN Harold L. Striegel, Eric Gnstafsson, and John W.

Baur, Chicago, Ill., assignors to Binks Manufacturing Company, Chicago,111., a corporation of Delaware Application May 7, 1945, Serial No.592,450

4 Claims. 1

The present invention relates to spray guns and more particularly to amultiple type of spray gun.

Among the objects of the invention is to provide a novel spray gunstructure for simultaneously spraying different character coatingmaterial in given relation, and which has a plurality of spray guncomponents or units which are relatively adjustable, as angularly, andeach of which units sprays a difierent kind or character of material, sothat the combined or aggregate sprays will produce a given coatingeffect or design. The spray gun units may be carried by a common body towhich the air for effecting the spraying of the material in theindividual units may be supplied and controlled, and may be adjustablyconnected to said body to obtain the desired relative adjustment of theunits and the sprays therefrom, whereby the sprays from the individualunits may be varied toward or from each other as desired to efi'ect thedesired coating character or design on the target or surface beingcoated. The individual air supplies to the gun units may be individuallyvaried, as by valves carried by the body of the device.

There are certain coating materials which are miscible and cannot beinitially mixed. Therefore, by the present invention they are separatelysprayed and permitted to mix only at the target surface.

There are other coating materials which will react with each otherchemically and also in that case it is desirable that they be separatelysprayed and not permitted to mix until they hit the target.

In some cases, the different coating materials will coalesce if mixed,as would be the case of a coating material containing a latex andanother containing a latex coagulant, and therefore the presentinvention comprehends the spraying of the materials separately and toprevent the coalescence until they hit the target.

Another object of the invention is to provide a common means, such as amanually operable trigger, carried by the body and having a memberconnected to the means, such as needle valves, for controlling thesupply of the material to and through each spraying unit, with means foradjusting the timing or relation of operation of the material-controlvalves.

Other objects, advantages, capabilities, features and the like arecomprehended by the Y invention as will later appear and as areinherently possessed by the invention.

Referring briefly to the'drawings:

Fig. 1 is a view in side elevation of a multiple spray gun constructedin accordance with the invention;

Fig. 2 is a top plan view thereof;

Y Fig. 3 is a sectional view taken in a plane represented by line 3-3 inFig. 1 of the drawings;

Fig. 4 is a sectional view taken in planes represented by line 'l4 inFig. 2 of the drawings;

Fig. 5 is a transverse sectional view taken. in planes represented byline 55 in Fig. 1 of the drawings;

Fig. 6 is a sectional view taken in a plane represented by line 6-6 inFigs. 1 and 4 of the drawings;

Fig. 7 is a fragmentary sectional view taken in a plane represented byline 1-1 in Fig. 1 of the drawings;

Fig. 8 is a fragmentary sectional view taken in a plane represented byline 8-8 in Fig. 7 of the drawings;

Fig. 9 is a fragmentary sectional view, on an enlarged scale, taken in aplane represented by line 99 in Fig. 2 of the drawings;

Fig. 10 is a side view of the nozzle part shown 'in Fig. 9;

as comprising a body I having a rearward part 2 from which depends ahandle or hand grip 3 and also having at the top a hook 4 by which thegun may be hung from any suitable means.

In the handle are provided bores or passages 5 and B (see Fig. 4), valvechambers I and 8 and an air passage 9 extending from the chamber I to anair passage Ill provided in the body I and the extension 2 (see Fig. 4).At the lower end of the passage or bore 5 is a plug H, and at the lowerend of the passage 6 is provided a coupling or union l2 having means, asa threaded portion I3, for the suitable connection of a compressed airduct, such as a hose or the like .(not shown). The bore or passage l0extends forward in the body I to a cross bore l4 (see Fig- 3) providedin the body I. Said cross bore is closed at an end thereof by a suitableplug I! (see Fig.

aseaaao 3 3). From the cross passage I4 extend air passages I6 (seeFigs. 3 and 9) and I1 and I8 (see Fig. 3), respectively leading to valvechambers I9 (see Figs. 3 and 9) and and 2| (see Fig. 3), andrespectively having valve seats 22, 23 and 20 (see Fig. 3). In thepassage It extends an elongated valve body 25 (see Figs. 3, 4, 5 and 9),the forward end of which has a valve seatin part 26 for seating on theseat 22, and the rear end of which has a threaded portion 21 adjustablethereby in a bushing-nut 28 threaded into the rear end of the bore orpassage I0 (see Figs.

. 3 and 4) and having also a finger piece or knob 29. On the stem 25within the bore I0 is awasher 30 which abuts against a cross pin 30aextending through the stem 25, and in the nut 28 is provided suitablepacking 3001 against which is pressed a washer 300 by a spring 30binterposed between the washers 30 and 300.

Referring to the handle 3, in the chamber I is located a valve cage orshell 3| (see Fig. 4) having a seat 32 fitted with a sealing engagementbetween the chambers I and 8, shell 3| having openings 33 for affordingcommunication between a chamber 34 within the shell 38 and the chamber 1surrounding said shell 3|. The forward end of the shell 3| has a screwplug 35 threaded in a forward portion of the handle 3, as shown in Fig.4, and said plug 35 has a forward packing gland 36 to. which is threadeda cap 31 (see Figs. 1 and 4). Slidable in the plug 35. gland 36 and cap31, and extending through said chamber 34 is a valve stem 38, theforward end part 39 of which is located at the rear of the trigger 40which engages the stem 38-39 when the trigger 40 is pressed back by theuser of the gun, and at the rear end portion of the stem 38 is carried avalve part 4| adapted to seat on the valve seat 32 by the force of aspring 42 pressing at its forward end against the valve 4| and at itsrear end against the rear extended end portion 43 of the chamber 8. Thevalve 4| may have a stub 44 for extending intothe forward end of thespring 42 to maintain it in alignment. The trigger 40 is pivotallyconnected by way of pivot pins 45 carried by a lower part 46 of the bodyI (see Figs. 1 and 4).

At the forward part of the body I are provided I chambers 20 and 2| andthrough nut-bushings 5| and 52 threaded at the forward end of the body Iand threaded to adiustably receive the threaded parts 53 and 54 of thestems 49 and for adjustment therein, the outer ends of the stems 49 and50 having finger knobs or heads 55 and 56. Each member 5| and 52 has asocket in which is a spring 51 (see Fig. 3) normally pressing at one endagainst a washer 58 abutting a cross pin 59 carried by the stems 49 and50, and at the other end pressing against a packing 51a in the head 5 I,the spring 51 acting to normally urge the valve 4'I48 toward closinposition when the knob 55, 56 is operated to adjust the stem 49, 50.

In the forward part of the body I are provided a plurality of verticalbores 60, 6| and 62 in each of which is a pivot plug 63 (see for exampleFig. 9) having a head 64, seated and sealed on the top of the body I, ashank or body 85 having an annular channel 66, a cross passage 61. andan axial passage 68 communicating with the cross passage 61 and leadingto the lower end of the plug 68, this lower end of the plug having athreaded portion 69. In the lower or underside of the body I areprovided sockets I0 around the threaded part 69 and in each of thesesockets is a gasket II or the like. The annular channels 66 are,respectively, in communication with the valve chamber I9, or valvechamber 20, or valve chamber 2|, as the case may be, depending uponwhich channel is referred to.

To each threaded portion 59 of the pivot plug 63 is threadedly connecteda spray gun unit I2, or 13. or I4, as the case maybe, all spray gununits being alike. Each spray gun unit has an upper hub I5 screwed tothe threaded lower end portion 66 of the pivot plug 63. In this way eachgun is angularly adjustable about the axis of the pivot plug 63,Normally, the-position of the middle gun I2 need not be adjusted, butthe side guns I3 and I4 are adjusted relative to the middle gun I2.However, the middle gun may also be adjusted in certain cases when it isdesired to do so.

Each gun unit has a gun body I6 having a forwardly extending hub 11, arearwardly extending hub I8 and a downwardly extending hub I9 (see forexample Fig. 9). To the hub 11 is threadedly connected and seated amaterial and or collar I01 (Figs. 4, 6 and 8) having at its endsairnozzle unit on the forward end of which is seated an air nozzle cap 8|held in place by a coupling ring 82, the cap 8| also having horns 83 forprojecting side air jets for effecting flat spraying. This constructionis shown in the McMartin Patent No. 2,249,771, granted July 22, 1941,and more specific description thereof is herein deemed unnecessary. Thematerial to be sprayed in and by each gun component 12, or 13. or I4passes by way of the passage 84 (see Fig. 9); passage 85, nozzle tip 86,and orifice 81; and the air passes by way of passages 88, 89, and 9| tothe orifice 81, and also by way of passages 92, 93, 94, and 96 to theside jet orifices.

91 in the horns 83. The flow of air is controlled and regulated byadjusting the air valves 25--26, 41-49, and 48-50. g

The flow of the coating material is controlled by a needle valve 98having a tip 99, and having its rear end extending into the hub I8 atthe rear portion of the gun'unit (see Fig, 9), such rear end portionpassing through suitable packing I00 and having threaded connection withthe forward endportlon I 0| of a stem I02. To. the rear end of the hubI8 is threaded a cap I03 which has a flanged part I04 provided with ahole for the passage of the stem I02, and between this flange I04 and asimilar flange I05 at the forward end of the stem I02 is locateda'spring I06 which normally urges the needle valve 9899 to closedposition, and which yields to permit the opening of the needle valve9899 when the trigger is pressed by the user of the device. Between thepacking I00 and the inner end of the cap I03 is interposed a springI00a.

The rear end portion of the stem I02 is threaded and on this is threadedan adjustable thimble heads or flanges I08 and I09 which may be nutshaped, or otherwise for turning the thimble or collar on the stem I 02and adjusting it therealong to regulate the timing of the opening of theneedle valves 98-99. A lock nut III! is provided on the free end of thestem I02 to hold the collar or thimble I01 locked in adjusted relation.

The upper part of the trigger 40 has spaced walls I I I to which arefixed side arms I I2, and in these side arms II 2 are carried theshanksII3 (see Figs. 6 and 7) of forks llfi having spaced aeoaaao fingers I I5which straddle the bodies of the thimbles I01 on the stems or shanksI02. The rear edge portions of the fingers H6 have tapered or curvedparts H8 to substantially abut squarely with the heads I of the thimblesI01 when the triggeris pulled back to operate the needle valves.

The inner ends of the stems H3 have threaded parts H1 (see Fig. 7) whichare secured to the sides of a fork piece having fingers I I8 forspanning the body of the thimble I01 of the middle gun unit. A suitablewasher H9 may be placed between each finger II 8 and the side wall IIIof the trigger, as shown in Fig. 7. It will be seen that the forks H4and the fork H0 are pivotally supported by the trigger 40 so that whenthe trigger is pulled back the forks H4 and H8 may have an angular playfor the fingers H5 to suitably squarely abut the rear flange I08 01' thethimble I01.

Normally, the spring I06 in each gun unit holds the needle valve 98-99closed. The thimbles are so adjusted on the stems I02 that there is aclearance between the rear collar I08 and the fingers H8 and H5 of theforks. See Fig. 6 by way of illustration. When the trigger is pulledback it will first engage the air valve stem 39 to admit air to the airpassage I0 and thence to the valves 22-26, 23-41, and 24-48 for the airto be first projected through the air nozzles 0| and side jet nozzles91. Further movement of the trigger 40 will bring the fingers H8 (seeFigs. 4 and, 6) into engagement with the collar I08 of the thimble I01of the middle gun, and then the fingers H5 into engagement with thecollars I08 of the thimbles I01 of the side guns. The latter engagementsmay be successive or simultaneous, or all may be simultaneous, asdesired. The effect in each and all such cases is to open the needlevalves in sequence or simultaneously as may be desired. Varying theposition of the thimbles I01 on their respective stems I02 will vary therelative timing of the opening of the needle valves to obtain differenteffects of spraying.

One of the objects of the device is to adjust the relation of the gununits, which is done angularly about the axis of the pivot plug 63 sothat the coating material may be sprayed from the gun units on thetarget more or less proximate, depending upon the resultant effect to beproduced. This adjustment is had by loosening the threaded connectionbetween the gun unit and the plug 63 and turning the gun unit to thedesired angular relation and then tightening said connection. Byadjusting the air control valves 22-26, 23-41, and 24-48 the resultanteffect, may also be varied as desired.

An object of the device is to use different kinds of coating material inthe respective gun units, such as different colored material. Toillustrate, reference may be made to Figs. 14, and 16 showing a fewexamples of any number of different patterns that may be effected. InFig. 14 is shown a pattern in which the background I20 is of apredominant color, such as a light color, which may be sprayed bythe'middle gun unit, and the parts I2I may be sprayed from one of theside gun units of another color, such as red, brown or yellow, etc., andthe parts I22 may be sprayed from another of the side gun units of stillanother color, such as blue, green or the like.

In Fig. 15, the background color I23 may not be so prominent, and theinterspersed other color areas I24 and I25 may be more prominent.

In Fig. 16 the background color I26 is of minor value. while the othercolors I21 and I28 are interspersed in major proportions.

All of these efl'ects are obtained in one spraying operation, that is,at the same time or simul-- taneously, and does not require theapplication of each color separately and at different times, whereby onemust be allowed, as heretofore, to sufliciently dry or set before theother was applied, and wherein one color had to be superimposed uponanother. The spray gun oi" the present invention applies all the colors,or different kinds of material, at once and there is no superimposing ofone color or kind on another, hence, considerable time and material aresaved.

While we have herein described and upon the drawings shown anillustrative embodiment of the invention, it is to be understood thatthe invention is not limited thereto but comprehends otherconstructions, arrangements of parts, de-

tails, features and the like without departing,

from the spirit of the invention. 0

Having thus disclosed the invention, we claim:

1. A multiple spray gun of the character disclosed, comprising, incombination, a body having a hand grip, a trigger movably supported onthe body adjacent the hand grip, air passages in the body extending tothe forward end thereof, an air valve within the body forcontrolling theentire flow of air through said air passages, a plurality of spray gununits support ed pendently from the forward end of the body, each spraygun unit including a. nozzle and having a continuous air flow connectionwith the air passages in the body, means to conduct material to eachspray gun unit, a normally closed needle valve for controlling flow ofmaterial from each unit, each unit being movable freely by hand about anaxis which is substantially vertical when the spray gun is held innormal horizontal position, and means adjustably coupling the trigger tothe needle valves so that the trigger when moved may cause flow ofmaterial from the nozzles after flow of air is started and may initiateflow from any one of the nozzles before or after or simultaneously withflow from any other nozzle and irrespective of the positions of theunits.

2. A multiple spray gun of the character disclosed comprising, incombination a body having air passages extending to the forward part ofthe body, an air valve in the body for controlling flow of air throughthe body, a trigger pivoted on the body and adapted to operate said airvalve, a plurality of spray gun units depending from the forward part ofthe body, a plurality of hollow members swlveled on the body andcommunicating with the air passages, each spray gun unit being securedto a hollow member so as to turn therewith relative to the body and soas to receive air therefrom in all positions into which it may turn,means to feed material to each spray gun unit, needle valve means ineach unit to control flow of material from the unit, and meansadjustably coupling the trigger to the needle valve means so that thetrigger may control flow of air and material in the manner desired.

3. A multiple spray gun of the character disclosed, comprising, incombination, a body having air passages extending therethrough, aplurality of spray gun units independently and movably supported uponthe body so that the angles of the sprays may be varied, each unitincluding a nozzle and having air and material passages terminating inthe nozzle, means for delivering auaaao ages, a needle valve in eachunit{or controlling the flow of material out of the nozzle, a springnormally closing each needle valve, each unit supporting meansconsisting of a hollow member secured to the body and havingcommunication with the air passages in the body and delivering air tothe unit, the unit turning about the axis of the hollow member when itsangularity is to be varied, a trigger pivoted on the body, an air valvein the body controlled by the trigger to admit compressed air to saidair passages and hence -to said nozzles, and means connecting thetrigger with the needle valves to permit opening of the needle valvesirrespective oi the angular positions of said units.

4. A multiple spray gun of the character disclosed, comprising, incombination, a body having air passages extending therethrough, aplurality oi spray gun units, means independently and pendentlysupporting the units-upon the body -so that the angles oi the sprays maybe manually varied, each unit including a nozzle and having air andmaterial passages terminating in the nozzle, means for deliveringmaterial to each unit through its material passages, a needle valve ineach unit for controlling the flow'oi material out of the nozzle, aspring normally closing each needle valve. a trigger pivoted on 8 thebody, an air valve in the body controlled by said trigger to admitcompressed air to said air passages and hence to said nozzles, eachneedle valve having a valve stem extending outside or they unit andhaving screw threads thereon, an adjustable thimble having a head andengaged with the screw threads on ,each valve stem, means to holdtheadjustable thimble in ad- Justed positions, means fixed to the triggerand straddling the thimblesjand adapted to abut the heads thereof, thethimble being of sufficient length to permit said trigger-aflixed meansto movea certain distance before the heads are abutted, the triggeroperating to lift the corresponding needlevalve oil? its seat wheneverthe thimble head is engaged by said triggerafflxed means.

' HAROLD L. STRIEGEL.

ERIC GUSTAFSSON. JOHN W. BAUR.

REFEItENCES CITED The following references are of record in the file ofthis patent: Q

UNITED- STATES PATENTS Number Name I Date 2,370,408 MacDonald Feb. 27,1945 2,380,827

